APA সাইটেশন

Bhatnagar, O. P. (1987). Evaluation methodology for training theory and practice. Oxford I B H publishing company.

শিকাগো স্টাইলে সাইটেশন

Bhatnagar, O P. Evaluation Methodology for Training Theory and Practice. New Delhi: Oxford I B H publishing company, 1987.

এমএলএ সাইটেশন

Bhatnagar, O P. Evaluation Methodology for Training Theory and Practice. Oxford I B H publishing company, 1987.